Stop-motion.



UNITED STAillEpSitlENT OFFlGE.

DALLAS B. HATHAWAY, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR TO THEWHITIN MACHINE WORKS, OF WHITINSVILLE,` MASSACHUSETTS, .A CORPORATION`OF MIASSACI-IU'SIEITTS.`

To all 'whom it may concern Be it known that I, DALLAS B. HATH- AWAY, ofNew Bedford, in the county of Bristol and State of Massachusetts, haveinvented the new and useful Improvements in Stop-Motions hereinafterfully set forth.

The invention is an improvement in sliver pan stop motions andconsistsin a simple construction of sliver pans adapted for use with the stopmotion apparatus of Hellman type combing machines in an effective andreliable manner, as will be hereinafter` fully described and moreparticularly pointed out in the claims.

The object of the invention is to eliminate the objections to the sliverpans now generally in use which arise from the factthat they require tobe loosely mounted or supported so as to be capable of moving Yforwardlyunder the pull of a bunched sliver to stop the motion of the machine.The instability of such sliver pans, consequent to such movability oftheir mounting, results in their frequently becoming stuck in theirnormal position and failing to slide into electrical circuit-making orcircuitbreaking position to actuate the stop motion apparatus.` Mypresent invention provides for the elimination of this and otherdifficulties attendant upon the existing forms of construction, and alsoprovides certain improvements in the manufacture of the pan which willbe apparent to those skilled in thisart.

In the accompanying drawings, forming part hereof, Figure 1 is avertical section of a sliver pan in position in a Heilman comber, andincludes a diagram of the stop motion apparatus; Fig. 2 is a similarview of substantially the same parts with the trumpet device in positionto stop the machine.

As shown in the drawings, the sliver pan is mounted between thedetaching `rolls 1 and the calender rolls 2 and 3, the function of thispan being as usual to conduct the pieced fleece emerging from thepiecing rolls to the calender rolls, at the same time `folding andcondensing such lieece into a round sliver, which is delivered bythecal.- ender rolls upon the sliver apron l and thence passes to thedelivery portion of the machine. The lower calenderl roll is carried onthe usual shaft journaled in the frame uprights `5 of the comber, whilethe upper Specification of Letters Patent.

Application filed October 22. 1912.

STOP-MOTION.

Patented Nov. 17, 1914.

Serial No. 727,096.

calender roll is supported by a bracket 6 secured to the under sid'e ofthe sliver apron by suitable means, not shown, and electricallynsulatedfroin it. During the normal operation of theinachine the sliverpassing between the calender rolls keeps them separated but when suchsliver for any reason fails and the rolls come into contact with eachother, the electrical communication thereby established betweenthcmcloses a stop motion circuit, such as indicated in Fig. 1, and stops themachine. This circuit includes a source of electrical energy and anelectro-mechanical apparatus represented by T, for shipping the belt orturning off the power, one terminal `of the circuit being grounded orconnected to the frame of the machine, as shown at 8, and the other tothe insulated bracket, as shown at 9. The sliver pan stop motion of thisinvention may utilize this saine circuit or `any other similar circuitor means for arresting the macliines motion.

The sliver pan comprises a pan body and a trumpet device. 'lfhe panbody, marked 10, is formed of a perforated Hoor portion 11, side walls12 and a front wall 13. `At its rear end it is substantially the widthof the fleece that emerges from the detaching rolls and at its forwardend it may be of no greater width than is necessary to receive andsupport the trumpet device, though the shape of the pan is immaterial tothis inn vention.1 Such a pan can be stamped or pressed out of a flatsheet metal blank with the desired perferations in the floor and endwall, and as shown herein is so made. The rear margin of theperforatedfloor portion 11 is turned downwardly forming a lip or hook1+i which :is adapted to be seated 1n a clip 15, the latter beingmounted on the casing wall 16 or upon any other suitable fixed support,and adapted to engage the lip 14 in such wise as to prevent movement ofthe pan toward or from the calender rolls but allow the pan to be liftedvertically out of engagement with the clip in an. obvious manner. Theforward end of the pan rests on the end of a set screw 17 carried on alongitudinal bar 18, the latter being supported as usual on the uprightframe portions As shown in the drawings the end ef this set screw may bereceived in a socket 19, secured to the underside of the pan body ifdesired but such attached socket is not necessary if the seat for therear portion of the pan is rigidlv supported as abo"e described in asubstantially fined position. Adjustment of the set screw allows theforward end of the pan to be raised or lowered as mav be necessary foradjusting its position with reference to the calender rolls.

The trumpet device of the pan is secured in the aperture punched in itsfront wall 13 and includes a trumpet proper 20, which is movable underthe pull of the bunched sliver and against the pressure of a spring soas to be thereby brought into contact with the terminal members 2 andclose the circuit above referred to. ln its preferred form the trumpetdevice includes the support for the movable trumpet, which is formed byanouter shell portion 21 and an inner tube section 22, the one beingscrewed into the other and clamping the margin of the aperture betweenthem so as to be thereby held in position concentric with the aperture.The entrance to the tube .section 22 is desirably flared as indicated.so as to coperatethereby with the internal taper of the' moving trumpet20 in folding and condensing the fiat fleece into rounded form; rifhemoving trumpet is mounted within and concentricillv to the flaring tubesection 22 and is provided with a cylindrical barrel portion adapted toslide in the forward orifice of the shell member 21 and also with ahelical spring 23 which is confined between the shell member and a heador 'shoulder on the rear end of the moving trumpet. rl`he lsaid springis thus ,arranged to press the trumpet in a rearward direction, counterto the normal frictiona-l pull of the sliver thereon, and a nut 24screwed to the forward end of the moving trumpet limits its motion inthis direction and thus determines the normal position of the trumpetwhen the machine is running. lt will be observed that the helical springis concentric to theaXis of the trumpet and that the constructionconceals and protects it against the entrance of dir-t to the chamber inwhich it is confined. lt will also be observed that the nut 24E isexterior tothe passage through the trumpet device and that lint or dirtis thus least likely to become interposed between it and its abutmentsurface, for which reason the disposition of the abutments as shown inthe drawings is preferred. By this means the head of the moving trumpetcan slide directly on the surface which forms the entrance to the part22 and thereby eliminate any obstruction, from the interior, to the freemovement of the moving member. According to the length of the movingtrumpet and the adjustment of the set screw 17, the nut 24 or the end ofthe trumpet itself may be adapted to have contact with the uppercalender roll 2 or with some other part whereby the stop motion systemwill be put in operation whenever' the abnormal pull of the sliver drawsthe trumpet forwardly against the pressure of the spring as shown by`Fig. i2. Such contact will close the circuit indicated in Fig. 1 and byactuating the mechanism 7 will stop the machine as will be readilyunderstood. The detail of the mechanism 7 forms no part of thisinvention, and being well understood is not illustrated or described,but it willbe apparent that it may operate either on the making orbreaking of the stop motion circuit as desired. Such a mechanism isshown, for example, in the co-pending application of A. F. VValdow filedlilay 7th, 1913, `Serial No. 765,983. It will be further evident thatthe tension of the spring may be adjusted or selected so as to permitmovement of the trumpet on any desired increase of the sliver pull, lessor greater than that necessary for pulling the -whole sliver panforwardly as heretofore.

The invention claimed is as follows:

1. In a sliver stop-motion mechanism, a trumpet device comprising atubular support, a trumpet sliding therein, a spring urging the trumpetcounter to the sliver, and a contact member engaged by said trumpet whenmoved by the sliver.

2. In a sliver stop-motion mechanism, a trumpet device comprised of tworelatively sliding members, both provided with a flarmg passage forsliver, spring means urging one of the members counter to the sliver,and a stop-motion element operated by said member.

8. ln aisliver stop-motion mechanism, a trumpet device. comprised of twotelescopically related members, a spring inclosed between said membersand tending to resist the movement of one of them by the lpull of thesliver, and a part adapted to be engaged by said member when movedagainst the spring. f

4. A sliver stop-motion mechanism comprising a trumpet device having asupport provided with .an entrance for the sliver, a trumpet adapted tomove within such support with its larger end sliding on thesurfaceforming the said entrance, a spring urging said trumpet counter to thesliver,

andv means for limiting the spring-urged prising a trumpet deviceincluding a support, a trumpet sliding therein, means urging the trumpetcounter' to the sliver and means for adjusting the normal position ofthe trumpet with relation to the support.

7. A sliver stop motion mechanism comprisinga trumpet device, includinga support, a trumpet sliding therein, a spring urging the slidingtrumpet counter to the sliver, means for adjusting the normal positionof the trumpet with relation to the support, and an electric circuithaving a terminal engaged by said trumpet.

8. In a comber, a sliver pan for conducting the sliver from the piecingto the calender rolls, comprising a pan body fixed against movement bythe sliver, a trumpet mounted on the pan body to be moved forwardlythereon by the pull of the sliver, and a stop-motion system having acontact member engaged by the forwardly pulled trumpet and operatingthereby to stop the comber.

9. In a Heilman comber, a sliver pan removably mounted between thepiecing and calender rolls, means for supporting the body of' said pan,holding it fixed against the pull of the sliver, a sliver trumpetsupported by the pan body, free to move relatively thereon by he pull ofthe sliver, a trumpet spring opposing such movement, and a stop-motioncircuit having one of its terminals connected with said trumpet and theother with one of said calender rolls.

10. In a comber, a sliver' pan having a trumpet subject to movementthereon by the pull of' a bunched sliver, and a helical springconcentrically disposed with reference to the trumpet and acting thereonto resist such movement, in combination with stop-motion mechanismcontrolled by the movement of the trumpet against the spring.

ll. In a comber, a sliver pan having a pan body pressed from a singlepiece of' sheet metal and a trumpet movably mounted thereon, incombination with a spring holding said trumpet against the pull of thesliver, and a stop motion mechanism engaged by the trumpet in itscounter-spring movement.

l2. In a comber, a sliver pan comprising a pan body fixed againstmovement by the sliver and a two lpart `trumpet device providing atapered siive'.` aperture for folding the fleece, one of such trumpetparts being fixed to the body and the other being movable relativelythereto and controlling a stop motion system.

18. In a comber, a sliver pan body and a two part trumpet, one part ofthe trumpet device being fixed to the body and the other being slidinglyguided by the fixed part, in combination with a concentrically disposedhelical spring between said parts and a stop motion system controlled bythe movement of the said part against its spring.

lll. In a comber, a sliver pan body having an aperture in its front wallportion, and a trumpet support formed of two members adapted to clampthe wall between them, in combination with a stop motion system and aspring-pressed moving trumpet member mounted to slide on the saidsupport to control such stop motion system.

15. In a sliver stop-motion mechanism, the combination of a trumpetmounted to move in a straight line coincident with the axis of thesliver passage therethrougli, means urging the trumpet in a directioncounter to the movement of the sliver, and a member engaged by saidtrumpet when moved by the sliver.

In testimony whereof, I have signed this specification in the presenceof two witnesses.

DALLAS B. HATHAVVAY.

Vitnesses EDWIN A. RooNEY, WVM. E. SPiLLER.

Copies o1' this patent may be obtained for ve cents each, by addressingthe Commissioner` of Patents,

Washington, D. G.

